MCC-NH Gas Fitters Practice Exam

Which factor is critical when determining spacing for gas piping supports?

1. Type of gas used

2. Length of the pipe

3. Weight of the pipe

4. Diameter of the pipe

The correct answer is: Weight of the pipe

The weight of the pipe is a critical factor when determining the spacing for gas piping supports because it directly influences the stability and safety of the piping system. Proper support spacing is necessary to prevent sagging or bending, which can lead to stress on joints and potential leaks. Each type of pipe material has a specific weight per length that affects how far apart supports can be placed. If the supports are too far apart relative to the weight of the pipe, the risk of deformation and failure increases, especially under the influence of external forces such as wind or seismic activity. Additionally, heavier pipes may need to be supported more closely together to ensure they are securely held in place, while lighter pipes can have greater spacing between supports. Therefore, understanding and calculating the weight of the pipe are essential for ensuring the integrity and safety of the gas piping system.